The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 2169 |
| 3 | 1306809 |
| 4 | 1469709369 |
| 5 | 2656472295609 |
| 6 | 7042235448544569 |
| 7 | 25740278881968596409 |
| 8 | 124066865052334175027769 |
| 9 | 762445058190042799428289209 |
| 10 | 5818666543923901596429593478969 |
| 11 | 53987940899344324456042542132654009 |
| 12 | 598504142090716188282023260396781018169 |
[1,9,2169,1306809,1469709369,2656472295609, 7042235448544569,25740278881968596409, 124066865052334175027769, 762445058190042799428289209, 5818666543923901596429593478969, 53987940899344324456042542132654009, 598504142090716188282023260396781018169] |